To find out how much bigger the largest bowl is than the smallest bowl, we need to determine the sizes of these bowls based on the given capacities.
From the provided bowl sizes:
- The smallest bowl is 2/8 quarts.
- The largest bowl is 6/8 quarts.
Now, let's subtract the size of the smallest bowl from the size of the largest bowl:
\[ 6/8 - 2/8 = (6 - 2) / 8 = 4/8 \]
To simplify 4/8:
\[ 4/8 = 1/2 \]
So, the largest bowl is \( \frac{1}{2} \) quart bigger than the smallest bowl.
Final answer: \( \frac{1}{2} \) quarts.